| Date | Tournament | State | Round | Betty Irwin | Diana Hilly |
|---|---|---|---|---|---|
| 23/02/2002 | Wollongong | NSW | 5 | 333 | 370 |
| 22/02/2003 | Wollongong | NSW | 7 | 301 | 379 |
| 19/02/2005 | Wollongong | NSW | 2 | 424 | 330 |
| 16/05/2009 | Ulladulla | NSW | 9 | 321 | 389 |
| 18/09/2010 | Ulladulla 2010 | NSW | 6 | 379 | 360 |
| 18/09/2010 | Ulladulla 2010 | NSW | 14 | 344 | 331 |
| 15/05/2011 | Ulladulla | NSW | 8 | 426 | 371 |
| Head-to-head after 7 games | 4 | 3 | |||
| Average score | 361.14 | 361.43 | |||
| Spread | -2 | 2 | |||